-3 1/12+1/6=-37/12+1/6=-37/12+2/12=-35/12
3 6/7+(-6 4/9)=27/7-58/9=243/62-406/62=-163/62
9 1/6+(-5 3/4)=55/6-23/4=110/12-69/12=41/12
-3 8/9+(-2 1/12)=-35/9-25/12=-140/36-75/36=-215/36
Пошаговое объяснение:
-3 1/12+1/6=-37/12+1/6=-37/12+2/12=-35/12
3 6/7+(-6 4/9)=27/7-58/9=243/62-406/62=-163/62
9 1/6+(-5 3/4)=55/6-23/4=110/12-69/12=41/12
-3 8/9+(-2 1/12)=-35/9-25/12=-140/36-75/36=-215/36
Пошаговое объяснение: